COLLYRIS. 



223 



Subfamily COLLY RINiE. 



Four genera are contained in this subfamily ; of these the 

 species belonging to Collyris and Neocollyris have usually been 

 classed together. The following table will serve to distinguish 

 them : — 



I. Labrum with seven teeth ; wings always 



present ; female with two small and 

 usually sharp projections on the 

 posterior edge of the last ventral 

 segment of the abdomen. 



i. Head very widely, deeply, and roundly 



excavate between the eyes ; vertex 

 behind the eyes very short ; size 



larger Collyris, F., p. 223. 



ii. Head narrowly impressed between 



the eyes, bistriate, vertex behind 

 the eyes more or less long ; size 



smaller Neocollyris, W. Horn, 



II. Labrum with six teeth ; wings absent; [p. 229. 

 elytra connate ; female without the 



two central projections on the last 

 ventral segment of the abdomen. 



i. Frontal excavation always very deep ; 



vertex as a rule not or scarcely 



strangulate behind Tricondyla, Latr.. p. 273. 



ii. Frontal excavation often wanting, 



or not very deep : vertex always 



strongly strangulate behind Derocrania, Chaud., 



[p. 282. 



Genus COLLYRIS. 



Collyris, Fabricius {ex parte), Syst. El. i, 1801, p. 226. 

 Colliurus, Latreille (e.v parte), Gen. Crust. Ins. i, 1806, p. 174. 

 Archicollyris, W. Horn, Deutsche Ent. Zeitschr. 1901, p. 43. 



Type, Collyris longicollis, Fabr. 



Chaudoir divides the species of Collyris into two groups. 

 Collyrides ingenuce and Collyrides spuria? ; these are very easily 

 distinguished from one another by the shape of the head which, 

 in the first group, has the vertex behind the eyes very short, and 

 the space between them deeply excavate, the excavation being 

 more or less carinate behind ; whereas, in the second group, the 

 vertex behind the eyes (or, as it is sometimes called, the occiput) 

 is long, more or less convex or pulvinate, and the space between 

 the eyes is much more narrowly and less strongly impressed. 



The full characters of the groups, as given by Chaudoir, are as 

 follows : — 



Collyrides ingermce, Chaudoir, Ann. Soc. Ent. France, 1864 

 p. 489. 



Labrum with the external teeth separated from the intermediate 



